JPH079173A - Laser beam welding method - Google Patents
Laser beam welding methodInfo
- Publication number
- JPH079173A JPH079173A JP5159514A JP15951493A JPH079173A JP H079173 A JPH079173 A JP H079173A JP 5159514 A JP5159514 A JP 5159514A JP 15951493 A JP15951493 A JP 15951493A JP H079173 A JPH079173 A JP H079173A
- Authority
- JP
- Japan
- Prior art keywords
- filler wire
- laser beam
- welded
- welding method
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はレーザ溶接法、特に、一
対の金属部材の被溶接部相互を突合せ、次いでレーザビ
ームを両被溶接部に照射しつゝそれら被溶接部に沿って
移動させ、その際、被溶接部にフィラワイヤを送給する
レーザ溶接法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding method, and more particularly, to a welding of a pair of metal members to be welded to each other, and then a laser beam is applied to both welded portions to move them along the welded portions. At that time, it relates to improvement of a laser welding method of feeding a filler wire to a welded portion.
【０００２】前記フィラワイヤは、例えば融接部の強度
向上等を狙って、その融接部を金属部材とは異なった組
成の合金より構成する、といった成分添加のために用い
られる。The filler wire is used for the addition of components, for example, for the purpose of improving the strength of the fusion-bonded portion, the fusion-bonded portion is made of an alloy having a composition different from that of the metal member.
【０００３】[0003]
【従来の技術】従来、この種レーザ溶接法の実施に当っ
ては、フィラワイヤをレーザビームの移動方向前側から
被溶接部に送給している（例えば、特公昭６３−５５３
９７号公報参照）。2. Description of the Related Art Conventionally, in carrying out this kind of laser welding method, a filler wire is fed to a welded portion from the front side in the moving direction of a laser beam (for example, Japanese Patent Publication No. 63-553).
(See Japanese Patent Publication No. 97).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来法
においては、レーザビームのパワーの一部がフィラワイ
ヤの溶融に消費されて、被溶接部を溶融するためのパワ
ーが減じられることから、被溶接部の溶込み深さが、フ
ィラワイヤを用いない場合に比べて大幅に浅くなり、十
分な溶接強度を得ることができない、といった問題があ
る。However, in the conventional method, a part of the power of the laser beam is consumed for melting the filler wire, and the power for melting the welded part is reduced, so that the welded part is reduced. There is a problem that the penetration depth is significantly shallower than in the case where a filler wire is not used, and sufficient welding strength cannot be obtained.
【０００５】この問題を回避するためには、パワーの大
きなレーザ溶接機を必要とするが、このような手段によ
ると、設備コストおよび生産コストの上昇を招来する。In order to avoid this problem, a laser welding machine having a large power is required, but such a means causes an increase in equipment cost and production cost.
【０００６】本発明は前記に鑑み、フィラワイヤの送給
方式を変える、といった比較的簡単な手段を採用するこ
とによって、フィラワイヤを確実に溶融すると共にその
フィラワイヤを用いない場合と略同等の溶込み深さを得
ることのできる前記レーザ溶接法を提供することを目的
とする。In view of the above, the present invention adopts a relatively simple means such as changing the feeding method of the filler wire, so that the filler wire is surely melted and the penetration depth is substantially equal to that when the filler wire is not used. It is an object of the present invention to provide the above laser welding method capable of obtaining high strength.
【０００７】[0007]
【課題を解決するための手段】本発明は、一対の金属部
材の被溶接部相互を突合せ、次いでレーザビームを両被
溶接部に照射しつゝそれら被溶接部に沿って移動させ、
その際、前記被溶接部にフィラワイヤを送給するレーザ
溶接法において、前記フィラワイヤを前記レーザビーム
の移動方向後側から前記被溶接部に送給することを特徴
とする。SUMMARY OF THE INVENTION According to the present invention, a welded portion of a pair of metal members is abutted against each other, and then a laser beam is applied to both welded portions to move them along the welded portions.
At that time, in the laser welding method of feeding the filler wire to the welded portion, the filler wire is fed to the welded portion from the rear side in the moving direction of the laser beam.
【０００８】[0008]
【作用】被溶接部において、レーザビームの移動方向後
側には溶融池が形成されており、その溶融池にフィラワ
イヤを供給し得るので、その溶融池の保有熱によってフ
ィラワイヤを略完全に溶融することが可能である。In the welded portion, a molten pool is formed on the rear side in the moving direction of the laser beam, and the filler wire can be supplied to the molten pool. Therefore, the heat held in the molten pool melts the filler wire substantially completely. It is possible.
【０００９】一方、レーザ溶接における被溶接部の溶込
み機構は熱伝導よりもむしろ金属蒸気の蒸発反力に起因
したキャビティ（キーホール）掘下げ力による。この場
合、フィラワイヤを溶融池に導入しても前記キャビティ
堀下げ力への影響は殆どないことから、フィラワイヤを
用いない場合と略同等の溶込み深さを得ることが可能で
ある。On the other hand, the penetration mechanism of the welded portion in laser welding is not due to heat conduction but due to the cavity (keyhole) digging force due to the evaporation reaction force of the metal vapor. In this case, even if the filler wire is introduced into the molten pool, there is almost no effect on the cavity digging force, so that it is possible to obtain a penetration depth substantially equal to that when the filler wire is not used.
【００１０】[0010]
【実施例】図１，２において、一対の板状金属部材１，
２がそれらの被溶接部３，４を突合せて略水平に配設さ
れる。両被溶接部３，４の上方にはレーザ溶接機５のレ
ンズ筒６がそれら被溶接部３，４に沿って矢示方向ａに
移動し得るように配置される。レンズ筒６はその内部に
レーザビームＢを集束する集光レンズ７を、また両被溶
接部３，４との対向端面にレーザビームＢの出射口８を
それぞれ有する。レーザビームＢは、溶込み深さ増進の
ために、その焦点ｆを被溶接部３，４表面よりも少し入
った位置に結ばせてレンズ筒６の移動に伴い矢示方向ａ
に移動する。レンズ筒６において、集光レンズ７および
出射口８間の周壁にシールドガスｇの供給口９が形成さ
れる。EXAMPLE In FIGS. 1 and 2, a pair of plate-shaped metal members 1,
2 are arranged substantially horizontally by abutting the welded portions 3 and 4. The lens barrel 6 of the laser welding machine 5 is arranged above the welded portions 3 and 4 so as to be movable in the arrow direction a along the welded portions 3 and 4. The lens barrel 6 has a condenser lens 7 for focusing the laser beam B therein, and an exit 8 for the laser beam B on the end faces facing the welded portions 3 and 4. In order to increase the penetration depth of the laser beam B, the focal point f thereof is focused to a position slightly inside the surfaces of the welded portions 3 and 4, and the laser beam B moves in the direction of the arrow a as the lens barrel 6 moves.
Move to. In the lens barrel 6, a shield gas g supply port 9 is formed on the peripheral wall between the condenser lens 7 and the emission port 8.
【００１１】レンズ筒６の移動方向ａ後側にフィラワイ
ヤ送給装置１０が配置され、その装置１０はレンズ筒６
と共に矢示方向ａに移動する。フィラワイヤ送給装置１
０はフィラワイヤ１１を巻装したリール１２と、そのリ
ール１２からフィラワイヤ１１を繰出す送給ローラ対１
３と、フィラワイヤ１１をガイドするガイドパイプ１４
とを備えている。A filler wire feeding device 10 is arranged on the rear side of the lens barrel 6 in the moving direction a, and the device 10 comprises the lens barrel 6
And moves in the direction of arrow a. Filler wire feeder 1
0 is a reel 12 around which the filler wire 11 is wound, and a feed roller pair 1 for feeding the filler wire 11 from the reel 12.
3 and a guide pipe 14 for guiding the filler wire 11
It has and.
【００１２】溶接作業に当っては、レーザビームＢの焦
点ｆを集光レンズ７を介して両被溶接部３，４表面より
も少し入った位置に結ばせ、またシールドガスｇを供給
口９からレンズ筒６内に供給して出射口８から噴出さ
せ、さらにフィラワイヤ１１を両被溶接部３，４にレー
ザビームＢの移動方向ａ後側から送給する。In the welding operation, the focal point f of the laser beam B is connected via the condenser lens 7 to a position slightly inside the surfaces of both welded parts 3 and 4, and the shield gas g is supplied to the supply port 9. Is supplied to the inside of the lens barrel 6 to be ejected from the emission port 8, and the filler wire 11 is further fed to the welded portions 3 and 4 from the rear side in the moving direction a of the laser beam B.
【００１３】図３，４に示すように、レーザビームＢが
両被溶接部３，４に照射されると、金属の溶融蒸発によ
ってそれら被溶接部３，４にはキャビティｃが形成され
る。金属蒸気はシールドガスｇによって吹飛ばされて、
その金属蒸気のプラズマ化が抑制されるので、レーザビ
ームＢの被溶接部３，４への進入が促進されてキャビテ
ィｃが堀下げられる。As shown in FIGS. 3 and 4, when the laser beam B is applied to the welded portions 3 and 4, cavities c are formed in the welded portions 3 and 4 by melting and evaporation of the metal. The metal vapor is blown off by the shield gas g,
Since the plasma of the metal vapor is suppressed, the penetration of the laser beam B into the welded portions 3 and 4 is promoted and the cavity c is dug down.
【００１４】キャビティｃの周囲には溶融池ｐが形成さ
れ、その溶融池ｐはレーザビームＢの移動方向ａ後側、
したがってキャビティｃの後側において容量が大きく、
その後縁部分が逐次凝固することによって融接部Ｆが現
出する。A molten pool p is formed around the cavity c, and the molten pool p is on the rear side of the moving direction a of the laser beam B,
Therefore, the capacity is large on the rear side of the cavity c,
After that, the fusion-bonded portion F appears by the solidification of the edge portion.
【００１５】フィラワイヤ１１は、溶融池ｐにおけるキ
ャビティｃの後側に送給され、その溶融池ｃの保有熱に
よって略完全に溶融される。これにより、例えば成分添
加の目的が達成される。The filler wire 11 is fed to the rear side of the cavity c in the molten pool p and is almost completely melted by the heat retained in the molten pool c. This achieves the purpose of adding components, for example.
【００１６】一方、レーザ溶接における被溶接部３，４
の溶込み機構は熱伝導よりもむしろ金属蒸気の蒸発反力
に起因したキャビティ堀下げ力による。この場合、フィ
ラワイヤ１１を溶融池ｐに導入しても前記キャビティ掘
下げ力への影響は殆どないことから、フィラワイヤ１１
を用いない場合と略同等の溶込み深さを得ることが可能
である。On the other hand, welded parts 3 and 4 in laser welding
The penetration mechanism is due to the cavity drilling force due to the evaporation reaction force of the metal vapor rather than heat conduction. In this case, the introduction of the filler wire 11 into the molten pool p has almost no effect on the cavity digging force.
It is possible to obtain a penetration depth substantially the same as when not using.
【００１７】フィラワイヤ１１の送給速度は、その材質
およびレーザビームのパワーによって決められるが、フ
ィラワイヤ１１の先端部がキャビティｃ内に侵入して、
その深さの増進を妨げないようにすることが必要であ
る。The feed rate of the filler wire 11 is determined by its material and the power of the laser beam. The tip of the filler wire 11 penetrates into the cavity c,
It is necessary not to prevent the increase of the depth.
【００１８】前記レーザ溶接法は、溶融池ｐによるフィ
ラワイヤ１１の溶融を行う関係から、低融点金属、例え
ばＡｌ合金よりなる金属部材１，２を、それらと同材種
のフィラワイヤ１１を用いてレーザ溶接する場合に有効
である。In the laser welding method, since the filler wire 11 is melted by the molten pool p, the metal members 1 and 2 made of a low melting point metal, for example, an Al alloy, and the filler wire 11 of the same kind as those are used for laser welding. It is effective when welding.
【００１９】図５は各種溶接継手１５〜１７を示す。FIG. 5 shows various welded joints 15-17.
【００２０】図５（ａ）は、実施例により得られた溶接
継手１５に該当する。一対の金属部材１，２は、Ａ５０
８３Ｐ−Ｏ（Ａｌ合金）よりなる板材であって、それら
の厚さは１２mmである。FIG. 5 (a) corresponds to the welded joint 15 obtained according to the embodiment. The pair of metal members 1 and 2 is A50
It is a plate material made of 83P-O (Al alloy), and their thickness is 12 mm.
【００２１】溶接条件は、レーザ出力 ３ｋＷ、溶接速
度 ４ｍ／min 、シールドガス Ｈｅガス、シールドガ
ス供給量 ２０リットル／min 、焦点ｆの直径ｄ ０．
３mm（図４）、溶融池ｐの幅ｗ ２．５mm（図４）、フ
ィラワイヤ１１の材質 Ａ５３５６ＷＹ（Ａｌ合金）、
その直径 １．２mm、フィラワイヤ１１の送給速度４ｍ
／min に設定された。The welding conditions are laser power of 3 kW, welding speed of 4 m / min, shield gas He gas, shield gas supply amount of 20 liters / min, diameter of focus f d.
3 mm (Fig. 4), width w of molten pool p 2.5 mm (Fig. 4), material of filler wire 11 A5356WY (Al alloy),
The diameter is 1.2 mm, and the feeding speed of the filler wire 11 is 4 m.
Set to / min.
【００２２】融接部Ｆにおける溶込み深さＤ1 はＤ1 ＝
３．５mmであった。The penetration depth D 1 at the fusion-bonded portion F is D 1 =
It was 3.5 mm.
【００２３】図５（ｂ）は、従来例に対応する比較例１
により得られた溶接継手１６に該当する。両金属部材
１，２の材質および厚さは実施例の場合と同じであり、
また溶接条件は、フィラワイヤ１１をレーザビームＢの
移動方向ａ前側から両被溶接部３，４に送給した点を除
いて実施例の場合と同じに設定された。FIG. 5B shows a comparative example 1 corresponding to the conventional example.
It corresponds to the welded joint 16 obtained by. The material and thickness of both metal members 1 and 2 are the same as in the embodiment,
The welding conditions were set to be the same as those in the example except that the filler wire 11 was fed from the front side in the moving direction a of the laser beam B to both welded parts 3 and 4.
【００２４】融接部Ｆにおける溶込み深さＤ2 はＤ2 ＝
２．７mmであり、実施例の場合（Ｄ 1 ＝３．５mm）に比
べて０．８mm浅くなることが判明した。Penetration depth D at fusion-bonded portion F2Is D2=
2.7 mm, in the case of the embodiment (D 1= 3.5 mm)
It turned out to be 0.8 mm in total.
【００２５】図５（ｃ）は、フィラワイヤ１１を用いな
い比較例２により得られた溶接継手１７に該当する。両
金属部材１，２の材質および厚さは実施例の場合と同じ
であり、また溶接条件は、フィラワイヤ１１の点を除い
て実施例の場合と同じに設定された。FIG. 5C corresponds to the welded joint 17 obtained in Comparative Example 2 in which the filler wire 11 is not used. The materials and thicknesses of both metal members 1 and 2 were the same as in the case of the example, and the welding conditions were set to be the same as the case of the example except for the filler wire 11.
【００２６】融接部Ｆにおける溶込み深さＤ3 はＤ3 ＝
３．７mmであり、実施例による溶込み深さＤ1 ＝３．５
mmは、フィラワイヤ１１を用いなかった場合と略同等で
あることが判明した。The penetration depth D 3 at the fusion-bonded portion F is D 3 =
It is 3.7 mm, and the penetration depth D 1 = 3.5 according to the embodiment.
It has been found that mm is approximately the same as when the filler wire 11 is not used.
【００２７】[0027]
【発明の効果】本発明によれば、フィラワイヤをレーザ
ビーム移動方向後側から被溶接部に送給する、といった
方式を採用することによって、フィラワイヤを確実に溶
融すると共にフィラワイヤを用いない場合と同等の溶込
み深さを得ることができる。According to the present invention, by adopting a system in which the filler wire is fed to the welded portion from the rear side in the laser beam moving direction, the filler wire is surely melted and is equivalent to the case where the filler wire is not used. The penetration depth can be obtained.
【図１】レーザ溶接機の要部概略図である。FIG. 1 is a schematic view of a main part of a laser welding machine.
【図２】図１の２−２線矢視図である。FIG. 2 is a view taken along the line 2-2 of FIG.
【図３】レーザ溶接過程を示す断面図である。FIG. 3 is a cross-sectional view showing a laser welding process.
【図４】図３の４−４線矢視図である。4 is a view taken along line 4-4 of FIG.
【図５】各種溶接継手を示す断面図であり、顕微鏡写真
からの写図である。FIG. 5 is a cross-sectional view showing various welded joints and is a drawing from a micrograph.
１，２ 金属部材 ３，４ 被溶接部 １１ フィラワイヤ Ｂ レーザビーム ａ 移動方向（矢示方向） 1, 2 Metal member 3, 4 Welded portion 11 Filler wire B Laser beam a Moving direction (arrow direction)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 正和 埼玉県和光市中央１丁目４番１号 株式会 社本田技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masakazu Sato 1-4-1 Chuo, Wako City, Saitama Prefecture Honda R & D Co., Ltd.
Claims (2)
（３，４）相互を突合せ、次いでレーザビーム（Ｂ）を
両被溶接部（３，４）に照射しつゝそれら被溶接部
（３，４）に沿って移動させ、その際、前記被溶接部
（３，４）にフィラワイヤ（１１）を送給するレーザ溶
接法において、前記フィラワイヤ（１１）を前記レーザ
ビーム（Ｂ）の移動方向（ａ）後側から前記被溶接部
（３，４）に送給することを特徴とするレーザ溶接法。1. The welded parts (3, 4) of a pair of metal members (1, 2) are butted against each other, and then the laser beam (B) is irradiated to both welded parts (3, 4). In the laser welding method in which the filler wire (11) is moved along the welded parts (3, 4) and at that time, the filler wire (11) is fed to the welded parts (3, 4), ) The laser welding method is characterized by feeding from the rear side in the moving direction (a) to the welded portion (3, 4).
ィラワイヤ（１１）はＡｌ合金より構成されている、請
求項１記載のレーザ溶接法。2. The laser welding method according to claim 1, wherein the metal members (1, 2) and the filler wire (11) are made of an Al alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5159514A JPH079173A (en) | 1993-06-29 | 1993-06-29 | Laser beam welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5159514A JPH079173A (en) | 1993-06-29 | 1993-06-29 | Laser beam welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH079173A true JPH079173A (en) | 1995-01-13 |
Family
ID=15695439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5159514A Pending JPH079173A (en) | 1993-06-29 | 1993-06-29 | Laser beam welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079173A (en) |
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|---|---|---|---|---|
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| JP2011056556A (en) * | 2009-09-11 | 2011-03-24 | Mazda Motor Corp | Laser beam welding method and laser beam welding apparatus |
| JP2011062728A (en) * | 2009-09-17 | 2011-03-31 | Mazda Motor Corp | Laser beam welding method and laser beam welding apparatus |
| US20140035279A1 (en) * | 2012-08-03 | 2014-02-06 | Lincoln Global, Inc. | Methods and systems of joining pipes |
| US10464168B2 (en) | 2014-01-24 | 2019-11-05 | Lincoln Global, Inc. | Method and system for additive manufacturing using high energy source and hot-wire |
-
1993
- 1993-06-29 JP JP5159514A patent/JPH079173A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090269206A1 (en) * | 2008-04-25 | 2009-10-29 | Caterpillar Inc. | Process for building up an edge of a machine component, and machine component remanufacturing strategy |
| US8257049B2 (en) * | 2008-04-25 | 2012-09-04 | Caterpillar Inc. | Process for building up an edge of a machine component, and machine component remanufacturing strategy |
| JP2011056556A (en) * | 2009-09-11 | 2011-03-24 | Mazda Motor Corp | Laser beam welding method and laser beam welding apparatus |
| JP2011062728A (en) * | 2009-09-17 | 2011-03-31 | Mazda Motor Corp | Laser beam welding method and laser beam welding apparatus |
| US20140035279A1 (en) * | 2012-08-03 | 2014-02-06 | Lincoln Global, Inc. | Methods and systems of joining pipes |
| US9683682B2 (en) * | 2012-08-03 | 2017-06-20 | Lincoln Global, Inc. | Methods and systems of joining pipes |
| US10464168B2 (en) | 2014-01-24 | 2019-11-05 | Lincoln Global, Inc. | Method and system for additive manufacturing using high energy source and hot-wire |
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